Drug interactions
Torsemide + Triamterene
Severity: Moderate
Torsemide and Triamterene: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Torsemide causes potassium loss while triamterene retains it, so they are often combined to preserve potassium. In renal impairment or with potassium supplements, triamterene can lead to hyperkalemia, and both drugs can cause volume depletion.
What this interaction means in plain words
Torsemide and Triamterene can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Torsemide belongs to Cardiovascular; Triamterene belongs to Cardiovascular.
Why it happens
Opposing renal potassium effects: loop diuretic kaliuresis versus ENaC blockade by triamterene.
What to do
Monitor serum potassium and renal function regularly, especially in the first weeks. Avoid potassium supplements unless hypokalemia is documented.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Torsemide
Other interactions of Triamterene
- Amiloride + Triamterene Contraindicated
- Eplerenone + Triamterene Contraindicated
- Potassium citrate / citric acid + Triamterene Contraindicated
- Potassium citrate + Triamterene Contraindicated
- Spironolactone + Triamterene Contraindicated
- Aceclofenac + Triamterene Major
Frequently asked questions
Can I take Torsemide with Triamterene?
MediHelp rates the interaction as moderate. Torsemide and Triamterene can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Torsemide causes potassium loss while triamterene retains it, so they are often combined to preserve potassium. In renal impairment or with potassium supplements, triamterene can lead to hyperkalemia, and both drugs can cause volume depletion.
How serious is the interaction between Torsemide and Triamterene?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and renal function regularly, especially in the first weeks. Avoid potassium supplements unless hypokalemia is documented.
What other medicines interact with Torsemide?
MediHelp also lists interactions of Torsemide with, for example, Amikacin, Amiodarone, Carbenoxolone. The full list is on the Torsemide page.
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